Abstract: This paper systematically studied the application of 3D GIS, Skyline and other technologies, analyzed the construction requirements of upwater and underwater 3D visualization system. An integrated surveying and mapping information service solution was proposed for 3D visualization of upwater and underwater integration.Using the Pearl River estuary waters as a pilot,this paper briefly expounded the technical method and realize for building a three-dimensional spatial data foundation framework of sea area based on Skyline technology, expected to provide reference for promoting 3D visualization of China's hydrographic services.

Key words: 3D geographic information system, Skyline, 3D scene model, tilt photography, land and sea intergration